Perforating device



Nov. 18, 1930..

'w. w. M CAIN PERFORATING DEVICE Filed July 16, 1927 2 Sheds-Sheet 1Nov. 18, 1930. I v w. w. M cmN 1 PERFORATING DEVICE Filed July 16, 1927'2 Sheets-Sheet z Patented Novi18, 1930 UNITED STATES PATE T FFIC i wnsw. MCCAIN, QEOAK PARKE r rNois, Assrcrnon Terrain: VALLEY CHE-AMERYCOMPANY, oFo rcAGo, rumors, A ,conronnrron QF.D-ELAWAB-E V PERFORATINGfo-nvrcn Application filed J uly lfii 1927'. Serial No. 206,295.

This invention relates to perforatingdevices for use in conjunction withwrapping niachines for makingsonie mark of identi fication on thewrapper so thatthe time and place of wrapping may be readily determined.

The invention may be applied to anykind of wrapping machine but it hasbeen designed primarily for use with butter wrapping machines. Printbutter is usually wrapped first in )archment 3a er or web then inaraffin.

web and then it is enclosed within a card- 1 board carton. Ordniarlly acreamer-y desires information as to when and at whatplant the butter hasbeen churnedso that if a'purchaser 'cr1tic1zes the butter for any reasonit is pos:--

sible to trace the time ofpacking, the batch from which'the butter waschurned, and the plant at which the butter waschurned. ,A preferred wayto get this information mm mark one of the wrappers with certain symbolsor numbers so that the information can be readily ascertained. r iUsually the purchaser discards the outer carton and the parafiin wrapperbut invariably retains the first wrapper on the butter until the butterhas been used. The proper wrapper to bear the identification is thefirst or parchment wrapper. Variousmethods may be employed to markthiswrapper but it has been found advantageous to provide perforationsin the wrapper which may be reconciled with the records for ascertainingdata about any print.

It has been found to be important to do the perforating :while thewrapper is being run v through the machine and before the cutting andwrapping operations. Manydifliculties have been encountered in theperforationof the moving web due to the fact that the perforations werenot smooth and even, the web often being ragged or the holes elongatedand sometimes running into each other, so that the perforated symbolswould be illegible and un-' n decipherable.

4 The object of this invention is to overcome these disadvantages and toprovide a perforating device which will travel with the speed of themoving web and perform the I perforating operation while theweb is inmotion. Y

views therein areasfollows: I

,Another ect is 'to'provide a perforating a device which will properly.perforate a moving web without tearing the web 111 anyway or causing anyelongationof the holes; 7

rltnother ect is to provideaperforating device which is simple nconstructiomwhich can'be readily and'economlcally manufac Theaccompanying drawings illustrate a selected embodiment of the inventionand the 'tured, and which can be quickly and easilyin- I stallodonpresent butter wrapping machines.

Fig. 1 is a "detail side view of a butter Wrapping machine with theperforating device fixed thereon;

. 2 is an elevation thereof; and

- Figs. 3 and 4 are detail viewsofthe cam for operating the device. 1 VV Referring-to the drawings 1 represents the frame of a wrapping machineand it supports the drum shaft 2 for operating the machine. This shaftdrivesa gear 3 which 7 I drives the gear d on the cam shaft 5-through anintermediate gear '6. The lower end of the cam follower 7 is bifurcatedas at8 and it engages a block 9 which is loosely mounted on the camshaft. A cam 10 fixedto the cam V shaft 5 has a groove 11 formed thereinto receive a roller 12 mounted on a cam" roller stud 13 which is finedto the cam followeri This arrangement of parts causes reciprocation ofthe cam follower, and the block causes perfect coordination of the partsandprevents any wear on the bifurcated end'of the cam follower. g

A'lever 1 1 has its. upper end pivoted to the frame at 15. A link116-pivotally con-J nects the cam follower to the lever 14: anda connectinglink 1 1- pivotally connects the lever to the carriage 17 As the camfollower reciprocates the connecting parts cause the carriage tobereciprocated longitudinally of theframe.

Directly above the carriage is a head 18 providedwith a pluralityofholes 19 which are adapted to receive a plurality of'pinsi'20 formed onthe. carriage for-keeping the head and carriage in operative positionrelative to as clearly shown in Fig. l. The shaft 21 has a bell crank 23fixed thereon to which is connected the cam follower'24. The camfollower is slotted as at 25 and straddles the shaft as shown in Fig. 3.A cam roller 26 cooperates with a cam 27 which is similar in allrespects to the cam 10. This arrangement of parts causes reciprocationof the cam follower and causes oscillation of the shaft 21 through "thebell crank 23.

A link 28 is pivotally connected to the bell crank 23 and to a lever 29fixed on the shaft 22. A bar 30 is connected to'the shafts 21 and 22 bymeans of levers 31 so thatoscillation of these shafts causes verticalre-* ciprocation of the bar 30. 1

hehead 18 carries rollers 32 and it is forced upwards by springs 33,Fig. 2, so that the rollers 32 are always pressing against the bar30. Asthe bar moves downward the head is moved therewith and when the barraises. the springs 33 raise the head. This arrangement causes the headto move simultaneously with the bar.

The pins 20 are of suflicient length to maintain the head and carriagein operable relation to each other during the vertical reciprocation ofthe head.

In assembling the parts the carriage is positioned under the web 34; andthe headabove the web. The head is designed to receive a.

suitable punch 35 while the carriage carries a corresponding die .36.

The web 34 from the roll 37 supported by the machine frame, is threadedthrough the perforating device to the wrapping mechanismwhich cutstheweb to suitable length and wraps it around the butter;

The operation of the device is as follows During rotation of the shaft 5the carriage is reciprocated longitudinally due to the lever connectionswith the cam follow r 7. The head is reciprocated vertically by the rod30 which is operated by the cam follower 24 through the various levers,and by the springs 33. The complementary pins 20 and holes 19 keep thehead and carriage in operative relation with each other so that duringlongitudinal reciprocation of the carriage the head will be carriedtherewith. The head is free to move vertically, and during longitudinalreciprocation of the head and carriage the head is free to operate andpunch the web. The levers, cams and followers are timed properly so thatthe carriage may move with the web andsubstantially at the same speed.

From the description given it will be seen that a perforating device hasbeen devised which will move with the moving web and when it attains thesame speed as the web theperforation will be made in the moving webthereby assuring proper perforation of the web.

While the invention refers to a perforating device for butter machinesit'is to be understood that the device may be used on any machine of alike character or on any other machine for which the device may beadapted.

Changes may be made in form, construction and arrangement of theinvention as set forth in the selected embodiment herein, withoutdeparting from the invention or sacrificing any of its materialadvantages, and the right is hereby reserved to make all such changes asfairly fall within the scope of the following claims I I claim: 7 1.Aperforating device comprising a horizontally reciprocating carriage, avertically reciprocating head in said carriage, horizontal bars on saidcarriage engaging the head and extending parallel with the line ofmovement of the web, means for vertically mov ing said bars inpara-llelrelation to the web and means for causing the head toreciprocate with the carriage.

2. in a perforating device of the class de-. scribed, the combination ofa frame, a carriage movable on the frame in parallel relation to theline of movement of the web, a

perforating head on said carriage, horizontal bars engaging said head tomove the head vertically, links pivotally connecting the bars with theframe to maintain said bars in parallel relation to the line of movementof the web, and means for actuating said links to move the barsvertically in parallel relation to the web. a

.3. I11 a perforating device of the class de scribed, the combination ofa frame, a carriagemovable along the frame parallel to the line ofmovement of the web, an operating bar, a perforating head on thecarriage in sliding engagement with the bar as the carriage moves, andmeans actuating said bar vertically in parallel relation to the line ofmovement of the web for vertically moving the perforating head.

4. In a perforating device of the class described, the combination of aframe, a carriage reciprocable along the frame in parallel relation tothe movement of the web, a perforating head on the carriage reciprocabletherewith and movable vertically towards and from the web, a pair ofbars in engagement with the head and disposed in parallel relation tothe movement of the carriage, links pivotally connecting said bars withthe frame for vertically moving said bars in their parallel relation tothe movement of the carriage, levers connected to said links foractuating the links, and a cam for actuating the levers.

IVES W. MCCAINQ

